I had some M-Audio AV30s for about a week. I loved how they sounded, but I noticed a slight rattle in my left speaker. Turns out one of the covers on a capacitor had come off and was rattling around inside the speaker. Needless to say I returned them and decided to try something else.
I must say, these speakers sound just as good if not better than the AV30s. They have plenty of thump with very crisp highs. Plus, unlike the AV30s they have bass and treble controls (verses a bass-boost switch which really took away from the audio). Oh yeah, these are a bit more narrow so they fit on my desk a bit better. Build quality is top notch. Everything is very tight with a fair amount of weight for both speakers. Knobs are very stiff with no play. Obviously, no rattles, buzzes or anything to speak of. Right now, I can't think of anything negative to say about them. Now, these don't seem to get quite as loud as the AV30s did, but well beyond anything I'd turn them to for normal listening. With the PC set to 50% and the knob turns to about 1/3 up, I'd say it's plenty loud for casual music enjoyment. With the knob halfway up is really rocking, anything higher and your ears start to bleed.
So yeah, assuming these don't die within a week, I think we've found a winner.